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Finding the Third Proportional to 65,990,419.59 and 89,867,688.47

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Solution

The third proportional to 65,990,419.59 and 89,867,688.47 is: 122,384,453.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,990,419.59 : 89,867,688.47 = 89,867,688.47 : x
  2. Step 2: Convert to fraction form
    65,990,419.59/89,867,688.47 = 89,867,688.47/x
  3. Step 3: Cross multiply
    65,990,419.59x = 89,867,688.47 × 89,867,688.47
  4. Step 4: Simplify right side
    65,990,419.59x = 8,076,201,430,716,302
  5. Step 5: Solve for x
    x = 8,076,201,430,716,302/65,990,419.59
  6. Step 6: Final answer
    x = 122,384,453.39

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.